checked and unchecked in jquery code example

Example 1: jquery set checkbox checked unchecked

//jQuery 1.6+ use
$('.checkbox').prop('checked', true);  //false for uncheck
//jQuery 1.5.x and below use
$('.checkbox').attr('checked', true);  //false for uncheck

Example 2: uncheck checkbox based on id js

const checkBox = doument.getElementById(id);
checkBox.checked = false;